Analysis of selected mechanical parameters for foamed materials with non-Newtonian liquid characteristics in terms of their use in aspects of protective helmets.

This article presents the results of measurements of mechanical parameters for foamed materials with non-Newtonian liquid characteristics (energy suppressed in the sample, force transferred to the anvil during the dynamic tests). In dynamic studies, the following characteristics were determined: the pressure forces exerted on the anvil as a function of the sample deflection during the impact, the energy suppressed in the sample depending on the temperature and the energy suppressed in the sample depending on the sample density. Foamed materials with non-Newtonian characteristics are currently used as elements protecting against impacts. Such materials have been used for the first time in protective helmets, and in particular in those designed for workplace applications.